Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 322 insertions, 0 deletions

diff --git a/drivers/scsi/fnic/fnic_isr.c b/drivers/scsi/fnic/fnic_isr.c
new file mode 100644
index 000000000..8896758fe
--- /dev/null
+++ b/drivers/scsi/fnic/fnic_isr.c
@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ */
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <scsi/libfc.h>
+#include <scsi/fc_frame.h>
+#include "vnic_dev.h"
+#include "vnic_intr.h"
+#include "vnic_stats.h"
+#include "fnic_io.h"
+#include "fnic.h"
+
+static irqreturn_t fnic_isr_legacy(int irq, void *data)
+{
+	struct fnic *fnic = data;
+	u32 pba;
+	unsigned long work_done = 0;
+
+	pba = vnic_intr_legacy_pba(fnic->legacy_pba);
+	if (!pba)
+		return IRQ_NONE;
+
+	fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
+	atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
+
+	if (pba & (1 << FNIC_INTX_NOTIFY)) {
+		vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_NOTIFY]);
+		fnic_handle_link_event(fnic);
+	}
+
+	if (pba & (1 << FNIC_INTX_ERR)) {
+		vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_ERR]);
+		fnic_log_q_error(fnic);
+	}
+
+	if (pba & (1 << FNIC_INTX_WQ_RQ_COPYWQ)) {
+		work_done += fnic_wq_copy_cmpl_handler(fnic, io_completions);
+		work_done += fnic_wq_cmpl_handler(fnic, -1);
+		work_done += fnic_rq_cmpl_handler(fnic, -1);
+
+		vnic_intr_return_credits(&fnic->intr[FNIC_INTX_WQ_RQ_COPYWQ],
+					 work_done,
+					 1 /* unmask intr */,
+					 1 /* reset intr timer */);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t fnic_isr_msi(int irq, void *data)
+{
+	struct fnic *fnic = data;
+	unsigned long work_done = 0;
+
+	fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
+	atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
+
+	work_done += fnic_wq_copy_cmpl_handler(fnic, io_completions);
+	work_done += fnic_wq_cmpl_handler(fnic, -1);
+	work_done += fnic_rq_cmpl_handler(fnic, -1);
+
+	vnic_intr_return_credits(&fnic->intr[0],
+				 work_done,
+				 1 /* unmask intr */,
+				 1 /* reset intr timer */);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t fnic_isr_msix_rq(int irq, void *data)
+{
+	struct fnic *fnic = data;
+	unsigned long rq_work_done = 0;
+
+	fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
+	atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
+
+	rq_work_done = fnic_rq_cmpl_handler(fnic, -1);
+	vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_RQ],
+				 rq_work_done,
+				 1 /* unmask intr */,
+				 1 /* reset intr timer */);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t fnic_isr_msix_wq(int irq, void *data)
+{
+	struct fnic *fnic = data;
+	unsigned long wq_work_done = 0;
+
+	fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
+	atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
+
+	wq_work_done = fnic_wq_cmpl_handler(fnic, -1);
+	vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_WQ],
+				 wq_work_done,
+				 1 /* unmask intr */,
+				 1 /* reset intr timer */);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t fnic_isr_msix_wq_copy(int irq, void *data)
+{
+	struct fnic *fnic = data;
+	unsigned long wq_copy_work_done = 0;
+
+	fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
+	atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
+
+	wq_copy_work_done = fnic_wq_copy_cmpl_handler(fnic, io_completions);
+	vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_WQ_COPY],
+				 wq_copy_work_done,
+				 1 /* unmask intr */,
+				 1 /* reset intr timer */);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t fnic_isr_msix_err_notify(int irq, void *data)
+{
+	struct fnic *fnic = data;
+
+	fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
+	atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
+
+	vnic_intr_return_all_credits(&fnic->intr[FNIC_MSIX_ERR_NOTIFY]);
+	fnic_log_q_error(fnic);
+	fnic_handle_link_event(fnic);
+
+	return IRQ_HANDLED;
+}
+
+void fnic_free_intr(struct fnic *fnic)
+{
+	int i;
+
+	switch (vnic_dev_get_intr_mode(fnic->vdev)) {
+	case VNIC_DEV_INTR_MODE_INTX:
+	case VNIC_DEV_INTR_MODE_MSI:
+		free_irq(pci_irq_vector(fnic->pdev, 0), fnic);
+		break;
+
+	case VNIC_DEV_INTR_MODE_MSIX:
+		for (i = 0; i < ARRAY_SIZE(fnic->msix); i++)
+			if (fnic->msix[i].requested)
+				free_irq(pci_irq_vector(fnic->pdev, i),
+					 fnic->msix[i].devid);
+		break;
+
+	default:
+		break;
+	}
+}
+
+int fnic_request_intr(struct fnic *fnic)
+{
+	int err = 0;
+	int i;
+
+	switch (vnic_dev_get_intr_mode(fnic->vdev)) {
+
+	case VNIC_DEV_INTR_MODE_INTX:
+		err = request_irq(pci_irq_vector(fnic->pdev, 0),
+				&fnic_isr_legacy, IRQF_SHARED, DRV_NAME, fnic);
+		break;
+
+	case VNIC_DEV_INTR_MODE_MSI:
+		err = request_irq(pci_irq_vector(fnic->pdev, 0), &fnic_isr_msi,
+				  0, fnic->name, fnic);
+		break;
+
+	case VNIC_DEV_INTR_MODE_MSIX:
+
+		sprintf(fnic->msix[FNIC_MSIX_RQ].devname,
+			"%.11s-fcs-rq", fnic->name);
+		fnic->msix[FNIC_MSIX_RQ].isr = fnic_isr_msix_rq;
+		fnic->msix[FNIC_MSIX_RQ].devid = fnic;
+
+		sprintf(fnic->msix[FNIC_MSIX_WQ].devname,
+			"%.11s-fcs-wq", fnic->name);
+		fnic->msix[FNIC_MSIX_WQ].isr = fnic_isr_msix_wq;
+		fnic->msix[FNIC_MSIX_WQ].devid = fnic;
+
+		sprintf(fnic->msix[FNIC_MSIX_WQ_COPY].devname,
+			"%.11s-scsi-wq", fnic->name);
+		fnic->msix[FNIC_MSIX_WQ_COPY].isr = fnic_isr_msix_wq_copy;
+		fnic->msix[FNIC_MSIX_WQ_COPY].devid = fnic;
+
+		sprintf(fnic->msix[FNIC_MSIX_ERR_NOTIFY].devname,
+			"%.11s-err-notify", fnic->name);
+		fnic->msix[FNIC_MSIX_ERR_NOTIFY].isr =
+			fnic_isr_msix_err_notify;
+		fnic->msix[FNIC_MSIX_ERR_NOTIFY].devid = fnic;
+
+		for (i = 0; i < ARRAY_SIZE(fnic->msix); i++) {
+			err = request_irq(pci_irq_vector(fnic->pdev, i),
+					  fnic->msix[i].isr, 0,
+					  fnic->msix[i].devname,
+					  fnic->msix[i].devid);
+			if (err) {
+				shost_printk(KERN_ERR, fnic->lport->host,
+					     "MSIX: request_irq"
+					     " failed %d\n", err);
+				fnic_free_intr(fnic);
+				break;
+			}
+			fnic->msix[i].requested = 1;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return err;
+}
+
+int fnic_set_intr_mode(struct fnic *fnic)
+{
+	unsigned int n = ARRAY_SIZE(fnic->rq);
+	unsigned int m = ARRAY_SIZE(fnic->wq);
+	unsigned int o = ARRAY_SIZE(fnic->wq_copy);
+
+	/*
+	 * Set interrupt mode (INTx, MSI, MSI-X) depending
+	 * system capabilities.
+	 *
+	 * Try MSI-X first
+	 *
+	 * We need n RQs, m WQs, o Copy WQs, n+m+o CQs, and n+m+o+1 INTRs
+	 * (last INTR is used for WQ/RQ errors and notification area)
+	 */
+	if (fnic->rq_count >= n &&
+	    fnic->raw_wq_count >= m &&
+	    fnic->wq_copy_count >= o &&
+	    fnic->cq_count >= n + m + o) {
+		int vecs = n + m + o + 1;
+
+		if (pci_alloc_irq_vectors(fnic->pdev, vecs, vecs,
+				PCI_IRQ_MSIX) == vecs) {
+			fnic->rq_count = n;
+			fnic->raw_wq_count = m;
+			fnic->wq_copy_count = o;
+			fnic->wq_count = m + o;
+			fnic->cq_count = n + m + o;
+			fnic->intr_count = vecs;
+			fnic->err_intr_offset = FNIC_MSIX_ERR_NOTIFY;
+
+			FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host,
+				     "Using MSI-X Interrupts\n");
+			vnic_dev_set_intr_mode(fnic->vdev,
+					       VNIC_DEV_INTR_MODE_MSIX);
+			return 0;
+		}
+	}
+
+	/*
+	 * Next try MSI
+	 * We need 1 RQ, 1 WQ, 1 WQ_COPY, 3 CQs, and 1 INTR
+	 */
+	if (fnic->rq_count >= 1 &&
+	    fnic->raw_wq_count >= 1 &&
+	    fnic->wq_copy_count >= 1 &&
+	    fnic->cq_count >= 3 &&
+	    fnic->intr_count >= 1 &&
+	    pci_alloc_irq_vectors(fnic->pdev, 1, 1, PCI_IRQ_MSI) == 1) {
+		fnic->rq_count = 1;
+		fnic->raw_wq_count = 1;
+		fnic->wq_copy_count = 1;
+		fnic->wq_count = 2;
+		fnic->cq_count = 3;
+		fnic->intr_count = 1;
+		fnic->err_intr_offset = 0;
+
+		FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host,
+			     "Using MSI Interrupts\n");
+		vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_MSI);
+
+		return 0;
+	}
+
+	/*
+	 * Next try INTx
+	 * We need 1 RQ, 1 WQ, 1 WQ_COPY, 3 CQs, and 3 INTRs
+	 * 1 INTR is used for all 3 queues, 1 INTR for queue errors
+	 * 1 INTR for notification area
+	 */
+
+	if (fnic->rq_count >= 1 &&
+	    fnic->raw_wq_count >= 1 &&
+	    fnic->wq_copy_count >= 1 &&
+	    fnic->cq_count >= 3 &&
+	    fnic->intr_count >= 3) {
+
+		fnic->rq_count = 1;
+		fnic->raw_wq_count = 1;
+		fnic->wq_copy_count = 1;
+		fnic->cq_count = 3;
+		fnic->intr_count = 3;
+
+		FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host,
+			     "Using Legacy Interrupts\n");
+		vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_INTX);
+
+		return 0;
+	}
+
+	vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
+
+	return -EINVAL;
+}
+
+void fnic_clear_intr_mode(struct fnic *fnic)
+{
+	pci_free_irq_vectors(fnic->pdev);
+	vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_INTX);
+}